Human-specific transcriptional networks in the brain.

Human-specific transcriptional networks in the brain.
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DOI:
10.1016/j.neuron.2012.05.034
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发表时间:
2012-08-23
期刊:
影响因子:
16.2
通讯作者:
Geschwind DH
Geschwind DH
中科院分区:
医学1区
文献类型:
--
作者:
Konopka G;Friedrich T;Davis-Turak J;Winden K;Oldham MC;Gao F;Chen L;Wang GZ;Luo R;Preuss TM;Geschwind DH

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Understanding human-specific patterns of brain gene expression and regulation can provide key insights into human brain evolution and speciation. Here, we use next generation sequencing, and Illumina and Affymetrix microarray platforms, to compare the transcriptome of human, chimpanzee, and macaque telencephalon. Our analysis reveals a predominance of genes differentially expressed within human frontal lobe and a striking increase in transcriptional complexity specific to the human lineage in the frontal lobe. In contrast, caudate nucleus gene expression is highly conserved. We also identify gene co-expression signatures related to either neuronal processes or neuropsychiatric diseases, including a human-specific module with CLOCK as its hub gene and another module enriched for neuronal morphological processes and genes co-expressed with FOXP2, a gene important for language evolution. These data demonstrate that transcriptional networks have undergone evolutionary remodeling even within a given brain region, providing a new window through which to view the foundation of uniquely human cognitive capacities.
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